Could 'Breast Cancer Genes' Play Role in Prostate Cancer, Too?

By Dennis Thompson
HealthDay Reporter

MONDAY, May 9, 2016 (HealthDay News) — A man’s risk of assertive and fatal prostate cancer competence be heavily shabby by gene mutations formerly related to breast and ovarian cancer in women, a contingent of new studies suggests.

And, during slightest one consultant says these commentary competence prove that group with a story of breast cancer in their family substantially should accept some-more heated screening for prostate cancer in a future, quite if those cancers are related to mutations in a supposed breast cancer genes — BRCA1 or BRCA2.

One of a studies found that group newly diagnosed with prostate cancer seemed 4 times some-more expected to already have modernized cancer if they lift a BRCA2 gene mutation, compared with a ubiquitous population.

“They are really most during high risk of cancer and we should be tailoring their screening, to be some-more assertive in screening contra reduction aggressive,” pronounced Dr. Srinivas Vourganti, a co-researcher on that investigate and an partner highbrow of urology during SUNY Upstate Medical University.

Findings from a studies were scheduled to be presented Monday during a annual assembly of a American Urological Association, in San Diego. Results from meetings are generally deliberate rough until published in a peer-reviewed journal.

“I cruise BRCA is a apparatus we can start regulating to heed who is going to advantage from progressing diagnosis and some-more assertive form treatments” for prostate cancer, total Dr. Brian Helfand, a urologic oncologist with NorthShore University HealthSystem in Chicago. Helfand was scheduled to assuage a row display of a 3 studies.

Breast cancer has been definitively related with BRCA1 and BRCA2 mutations. Up to two-thirds of women with a BRCA1 turn and as many as 45 percent of women with BRCA2 will rise breast cancer by age 70, according to estimates from a U.S. National Cancer Institute.

BRCA mutations have been insincere to change other forms of cancer as well, since these genes routinely furnish proteins that correct shop-worn DNA that could differently means cancer, Vourganti said.

But prior investigate has estimated that BRCA mutations would be concerned in as few as 5 percent of prostate cancers, Helfand said.

“We all only took it for what it was worth,” Helfand said. “Yeah, they’re there, though it’s not germane to 95 percent of men.”

Now, these 3 new studies prove that a prostate cancer risk from BRCA mutations competence have been exceedingly underestimated, Helfand and Vourganti said.

In a initial study, Vourganti and his colleagues conducted an justification review. The examination total a formula of 12 prostate cancer studies. Those studies enclosed 261 group who tested certain for a BRCA2 mutation.

The researchers found that a cancer already had widespread to other tools of a physique in 17 percent of newly diagnosed prostate cancer patients who had a BRCA2 mutation, compared with 4 percent of new diagnoses opposite a ubiquitous population.

Men with BRCA2 mutations also were most some-more expected to be diagnosed with late-stage prostate cancer — about 40 percent compared with 11 percent of a ubiquitous population, a commentary showed.

“This is really telling,” Vourganti said. “When [these] group are diagnosed, they have really assertive cancers.”

The second investigate reviewed blood DNA samples from 857 prostate cancer patients treated during a Walter Reed National Military Medical Center in Bethesda, Md.

Researchers found that black prostate cancer patients were some-more than 3 times as expected to have a BRCA1 or BRCA2 turn as white patients — 7 percent contra 2 percent.

In addition, black prostate cancer patients were some-more expected to have their cancer widespread to another partial of their physique than whites (9 percent contra 2 percent). And it tended to take reduction time for their cancer to spread, a commentary showed.

BRCA mutations could assistance explain because black group are dual or some-more times some-more expected to die from prostate cancer than white men, Helfand said.

“The magnitude of BRCA mutations in African American group has been mostly unknown,” he said. “This investigate shows it’s most aloft than we thought, and competence be a good reason because African American group are some-more expected to die or have assertive disease.”

The third investigate focused exclusively on group who’d been treated for breast cancer.

Breast cancer is intensely singular in men, Helfand said. A man’s lifetime risk of breast cancer is about one in 1,000, compared with a one in 7 lifetime risk for prostate cancer, according to a American Cancer Society.

A examination of scarcely 5,800 group diagnosed with breast cancer suggested that they had a some-more than 30 percent increasing risk of building prostate cancer after on.

Doctors should cruise screening group with a personal or family story of breast cancer for BRCA mutations that could change their risk of prostate cancer, Helfand resolved from these 3 studies.

“We need to commend this as a risk cause and start screening those group some-more aggressively,” he said.

In addition, prostate cancer patients who exam certain for a BRCA turn competence respond improved to cancer treatments that are some-more effective in treating BRCA-positive breast cancer, Vourganti said.

“In this epoch of personalized medicine, there’s guarantee for group who benefaction with BRCA2,” he said. “We’re training that prostate cancer is not one disease. Rather, it is many opposite diseases that need to be treated on a personalized and particular basis. Men need to speak with their doctors and know that their genes do matter.”

More information

For some-more on BRCA mutations, revisit a U.S. National Cancer Institute.